/* ==========================================================================
   Adir Buskila — CS Study Tools Deck · "Signal" skin
   Hand-rolled. A live WebGL ribbon field (signal.js) sits behind frosted
   glass tiles. Per-subject accent set from JS via --accent / --accent-dim /
   --accent-faint; pointer spotlight via --mx / --my / --spot; tilt via
   --rx / --ry / --tx / --ty.
   ========================================================================== */

:root {
  --bg: #0a0b0e;
  --bg-2: #0f1116;
  --glass: rgba(21, 23, 31, 0.68);
  --glass-deep: rgba(9, 10, 14, 0.78);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.18);
  --ink: #eceef4;
  --ink-dim: #9aa1ad;
  --ink-faint: #737b88;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --display: 'Space Grotesk', system-ui, sans-serif;
  --serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius: 18px;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
}

@property --beam {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { color-scheme: dark; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

::selection { background: rgba(34, 211, 238, 0.28); }

/* ---- Signal canvas + backdrop -------------------------------------------- */

/* Layering note: the canvas and backdrop sit at z-index 0 and .page at 1 —
   NOT negative z-index. Chrome leaves negative-z root layers out of the
   backdrop that backdrop-filter samples, so glass tiles would not blur the
   signal behind them. */

#signal {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
  pointer-events: none;
}

.no-signal #signal { display: none; }

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  /* vignette for depth over the signal */
  background: radial-gradient(130% 95% at 50% 38%, transparent 48%, rgba(0, 0, 0, 0.62) 100%);
}

/* CSS-only stand-in when WebGL is unavailable */
.no-signal .backdrop {
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(34, 211, 238, 0.08), transparent 60%),
    radial-gradient(820px 520px at 92% 112%, rgba(167, 139, 250, 0.08), transparent 60%),
    var(--bg);
}

.no-signal .backdrop::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.032) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(1300px 900px at 50% -5%, #000 20%, transparent 90%);
  mask-image: radial-gradient(1300px 900px at 50% -5%, #000 20%, transparent 90%);
}

/* film grain, always */
.backdrop::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.45;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

/* ---- Page frame --------------------------------------------------------- */

.page {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 6vw, 72px) clamp(18px, 4vw, 36px) 32px;
}

/* ---- Header -------------------------------------------------------------- */

.site-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: clamp(32px, 5vw, 60px);
}

.id-block { min-width: 0; }

.handle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 18px;
  animation: fade-up 0.8s var(--ease-out) both;
}

.handle .live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan), 0 0 2px var(--cyan);
  animation: pulse 2.4s ease-in-out infinite;
}

.handle .sep { opacity: 0.35; }

#deck-count { color: var(--cyan); }

.wordmark {
  position: relative;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.7rem, 8.2vw, 4.9rem);
  letter-spacing: -0.045em;
  line-height: 0.98;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.55), 0 0 60px rgba(0, 0, 0, 0.5);
  animation: fade-up 0.9s var(--ease-out) 0.05s both;
}

/* one-time chromatic split that converges into the wordmark */
.wordmark::before,
.wordmark::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  white-space: nowrap;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0;
}

.wordmark::before {
  color: var(--cyan);
  animation: split-l 1.15s var(--ease-out) 0.05s both;
}

.wordmark::after {
  color: #f472b6;
  animation: split-r 1.15s var(--ease-out) 0.05s both;
}

.tagline {
  margin-top: 16px;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  letter-spacing: -0.005em;
  line-height: 1.25;
  color: #c9ced8;
  max-width: 30ch;
  width: fit-content;
  /* glass plate so the line stays legible over the ribbon field */
  padding: 10px 16px 12px;
  margin-inline-start: -16px;
  border-radius: 14px;
  background: rgba(10, 12, 18, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  animation: fade-up 0.9s var(--ease-out) 0.18s both;
}

@media (max-width: 559.98px) {
  .tagline { margin-inline-start: 0; }
}

/* GitHub CTA: rotating conic beam around a dark pill */
.gh-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 11px 18px 11px 16px;
  margin-bottom: 6px;
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    conic-gradient(from var(--beam),
      rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0.10) 55%,
      var(--cyan) 70%, var(--violet) 82%,
      rgba(255, 255, 255, 0.10) 100%) border-box;
  box-shadow: 0 10px 30px -14px rgba(34, 211, 238, 0.35);
  animation: beam 5s linear infinite, fade-up 0.9s var(--ease-out) 0.25s both;
  transition: box-shadow 0.3s, transform 0.3s var(--ease-out);
}

.gh-link .ext { font-size: 11px; color: var(--cyan); transition: transform 0.25s; }

.gh-link:hover,
.gh-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 40px -12px rgba(34, 211, 238, 0.55);
}

.gh-link:hover .ext { transform: translate(2px, -2px); }

.gh-link:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* ---- Deck: chronological period sections -------------------------------- */

.deck {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4vw, 40px);
}

.period-head {
  display: flex;
  align-items: baseline;
  gap: 10px 14px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.period-title { font: inherit; letter-spacing: inherit; color: var(--cyan); }
.period-count { color: var(--ink-faint); }

.live-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.live-grid + .lab-grid { margin-top: 12px; }

@media (min-width: 560px) and (max-width: 899.98px) {
  .live-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .live-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Glass panels (tiles + star rows share the spotlight system) ------- */

.tile,
.star-item {
  --mx: 50%;
  --my: 50%;
  --spot: 0;
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--glass), var(--glass-deep));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 24px 60px -34px rgba(0, 0, 0, 0.9);
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  @media (min-width: 700px) {
    .tile,
    .star-item {
      -webkit-backdrop-filter: blur(18px) saturate(1.5);
      backdrop-filter: blur(18px) saturate(1.5);
    }
  }
}

/* software GL (no GPU): skip the per-tile blur, lean on denser glass */
.signal-lite .tile,
.signal-lite .star-item {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  background: linear-gradient(160deg, rgba(21, 23, 31, 0.86), rgba(9, 10, 14, 0.92));
}

/* spotlight ring: accent light on the border nearest the pointer */
.tile::before,
.star-item::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  pointer-events: none;
  background: radial-gradient(260px circle at var(--mx) var(--my), var(--accent) 0%, transparent 62%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: var(--spot);
  transition: opacity 0.25s;
  z-index: 2;
}

/* spotlight fill: soft accent wash inside the panel */
.tile::after,
.star-item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(420px circle at var(--mx) var(--my), var(--accent-faint), transparent 60%);
  opacity: var(--spot);
  transition: opacity 0.25s;
  z-index: 0;
}

.tile > *,
.star-item > * { position: relative; z-index: 1; }

/* ---- Tiles ---------------------------------------------------------------- */

.tile {
  --rx: 0deg;
  --ry: 0deg;
  --tx: 0px;
  --ty: 0px;
  --s: 1;
  display: flex;
  flex-direction: column;
  min-height: 210px;
  padding: clamp(20px, 2.6vw, 26px);
  border-radius: var(--radius);
  transform: perspective(1000px) rotateX(var(--rx)) rotateY(var(--ry)) scale(var(--s));
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease-out), border-color 0.3s, box-shadow 0.3s;
  animation: tile-in 0.9s var(--ease-out) both;
  animation-delay: calc(240ms + var(--i, 0) * 70ms);
  animation-fill-mode: backwards;
}

.tile.is-tilting { transition: transform 0.09s linear, border-color 0.3s, box-shadow 0.3s; }

a.tile:hover,
a.tile:focus-visible {
  --s: 1.012;
  border-color: var(--accent-dim);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.10),
    0 30px 80px -30px var(--accent-dim),
    0 2px 12px rgba(0, 0, 0, 0.5);
}

a.tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* large watermark glyph, parallaxes against the tilt */
.tile .mark {
  position: absolute;
  right: -22px;
  bottom: -26px;
  width: 170px;
  height: 170px;
  color: var(--accent);
  opacity: 0.075;
  z-index: 0;
  pointer-events: none;
  transform: translate(var(--tx), var(--ty)) rotate(-8deg);
  transition: opacity 0.35s, transform 0.55s var(--ease-out);
}

.tile.is-tilting .mark { transition: opacity 0.35s, transform 0.09s linear; }

a.tile:hover .mark,
a.tile:focus-visible .mark { opacity: 0.16; }

.tile .mark svg { width: 100%; height: 100%; stroke-width: 1.1; }

/* ---- Tile internals -------------------------------------------------------- */

.tile-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--accent-dim);
  border-radius: 13px;
  color: var(--accent);
  background:
    radial-gradient(70px 46px at 30% 20%, var(--accent-faint), transparent 75%),
    rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 0 0 0 var(--accent-faint);
  transition: box-shadow 0.35s, transform 0.35s var(--ease-out);
}

.glyph svg { width: 24px; height: 24px; filter: drop-shadow(0 0 6px var(--accent-faint)); }

a.tile:hover .glyph,
a.tile:focus-visible .glyph {
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 0 0 6px var(--accent-faint);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

.chip-live {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-faint);
}

.chip-live .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

.chip-soon {
  color: var(--ink-faint);
  background: rgba(255, 255, 255, 0.025);
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 7px;
}

.subject {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.3vw, 1.75rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 9px;
  color: #fff;
}

/* the course's Hebrew name, small, under the English title */
.subject-he {
  margin: -4px 0 11px;
  text-align: left;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--accent);
  opacity: 0.85;
}

.blurb {
  color: var(--ink-dim);
  font-size: 0.93rem;
  max-width: 46ch;
  margin-bottom: 20px;
}

.tile-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}

.tile-meta .url {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tile-meta .arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s, background-color 0.3s;
}

a.tile:hover .arrow,
a.tile:focus-visible .arrow {
  transform: translate(2px, -2px);
  border-color: var(--accent-dim);
  background: var(--accent-faint);
}

/* ---- Coming-soon treatment -------------------------------------------------- */

.is-soon {
  border-style: dashed;
  background:
    repeating-linear-gradient(-45deg, transparent 0 9px, rgba(255, 255, 255, 0.014) 9px 10px),
    linear-gradient(160deg, var(--glass-deep), rgba(9, 10, 14, 0.8));
}

.is-soon .glyph,
.is-soon .mini-glyph,
.is-soon .tag,
.is-soon .mark { opacity: 0.5; }

.is-soon .subject { color: var(--ink-dim); }

.is-soon .blurb,
.is-soon .tile-meta { color: var(--ink-faint); opacity: 0.85; }

/* ---- Building cards: compact in-development tiles ----------------------- */

.lab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

@media (min-width: 560px) and (max-width: 899.98px) {
  .lab-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .lab-grid { grid-template-columns: repeat(3, 1fr); }
}

.tile-mini {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  min-height: 0;
  padding: 13px 16px;
  border-radius: 13px;
  animation-delay: calc(700ms + var(--i, 0) * 45ms);
}

.mini-glyph {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--accent-dim);
  border-radius: 10px;
  color: var(--accent);
  background:
    radial-gradient(54px 36px at 30% 20%, var(--accent-faint), transparent 75%),
    rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.mini-glyph svg { width: 20px; height: 20px; }

.mini-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.mini-subject {
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--ink-dim);
}

.mini-he {
  display: block;
  text-align: left;
  font-size: 0.86rem;
  color: var(--ink-faint);
}

.tile-mini .chip { padding: 4px 8px; font-size: 9px; }

/* ---- Star the source ---------------------------------------------------------- */

.starline {
  margin-top: clamp(34px, 5vw, 52px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line);
  animation: fade-up 0.8s var(--ease-out) 0.7s both;
}

.starline-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.starline-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fbbf24;
}

.starline-title svg { filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.5)); }

.starline-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink-dim);
  max-width: 58ch;
  margin-bottom: 20px;
}

.star-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

@media (min-width: 620px) {
  .star-grid { grid-template-columns: 1fr 1fr; }
}

.star-item {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 16px;
  border-radius: 13px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s, box-shadow 0.3s;
}

.star-item:hover,
.star-item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent-dim);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 16px 40px -20px var(--accent-dim),
    0 2px 8px rgba(0, 0, 0, 0.4);
}

.star-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.star-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.22);
  background: rgba(251, 191, 36, 0.08);
  transition: transform 0.3s var(--ease-out);
}

.star-item:hover .star-ic { transform: rotate(-12deg) scale(1.06); }

.star-txt {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.star-subject {
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}

.star-repo {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.star-cta {
  margin-left: auto;
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  transition: color 0.25s;
}

.star-arrow { transition: transform 0.25s; }

.star-item:hover .star-cta,
.star-item:focus-visible .star-cta { color: var(--accent); }

.star-item:hover .star-arrow,
.star-item:focus-visible .star-arrow { transform: translate(2px, -2px); }

/* ---- Footer ------------------------------------------------------------------ */

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(40px, 6vw, 64px);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  animation: fade-up 0.8s var(--ease-out) 0.9s both;
}

.site-footer .sep { opacity: 0.4; }

.site-footer a {
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: color 0.25s, border-color 0.25s;
}

.site-footer a:hover,
.site-footer a:focus-visible { color: var(--ink); border-color: var(--ink-dim); }

.site-footer a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* ---- No-JS fallback ------------------------------------------------------------ */

.noscript-list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.noscript-list a { color: var(--cyan); }

/* ---- Motion ---------------------------------------------------------------------- */

@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes tile-in {
  from { opacity: 0; transform: perspective(1000px) translateY(18px) scale(0.975); filter: blur(8px); }
  to   { opacity: 1; transform: perspective(1000px) translateY(0) scale(1); filter: blur(0); }
}

@keyframes split-l {
  0%   { opacity: 0.85; transform: translate(-18px, 0); }
  60%  { opacity: 0.55; }
  100% { opacity: 0; transform: translate(0, 0); }
}

@keyframes split-r {
  0%   { opacity: 0.85; transform: translate(18px, 0); }
  60%  { opacity: 0.55; }
  100% { opacity: 0; transform: translate(0, 0); }
}

@keyframes beam {
  to { --beam: 360deg; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .tile { transform: none !important; }
  .wordmark::before, .wordmark::after { display: none; }
}